Control system



T. H. SCHOEPF.

CONTROL SYSTEM.

APPLICATION FILED MAY 8,1916.

1,352,480, PatentedSept. 14, 1920.

llllmlllmlhig wlmm l l l WITNESSES 1 INVENTOR ATTORNEY Q? meagre/7f 50/7oepf W6. WLZQ/ UNITED STATES. PATENT OFFICE.

THEODORE H. SCHOEPF, OF PITTSBURGH, PENNSYLVANIA, ASSIGNOR TO WESTING- HOUSE ELECTRIC AND MANUFACTURING CGMPANY, A CORPORATION OF PENN- SYLVANIA.

CONTROL SYSTEIVI.

"352 480 Specification of Letters Patent. Patgnted Sept, 14, 192() Application filed May 8, 1916. Serial No. 95,139. To allwhomz't may concern: be understood that my invention is not, in

Be it known that I, THEODORE H. any sense, so restricted but is equally ap- SOHOEPF, a citizen of the United States, and plicable to various other classes of eleca resident of Pittsburgh, in the county oi: trically propelled vehicles and conditions of Allegheny and State of Pennsylvania, have service, such, for example, as mining locoinvented a new and useful Improvement in motives. Control Systems, of which the following is The single figure of the accompanying a specification. drawing is a diagrammatic view of an eleciviy invention relates :o electrically protrically propelled vehicle and a system of 10- pelled vehicles and particularly to vehicles control there-tor, embodying my invention.

that are adapted for operation from either Referring to the drawing, an electrically a storage battery carried thereon or from propelled vehicle 1 is provided with a front an external source of energy, such as a troldriving axle 2 having driving wheels 3 ley conductor. mounted thereon, and a rear driving trade 15 One object of my invention is to provide l having diving wheels 5 mounted thereon. a system of control for an electrically pro The electric vehicle 1 is adapted to be propelled vehicle adapted to be supplied with polled by electric motors 6 and 7 having, energy from either a trolley or a storage respectively, armatures 8 and 9 and field battery which shall include means for chargwindings 10 and 11. The armature 8 of the 20 ing the battery when the vehicle is being opmotor 6 is mounted upon a shaft 12 which is 7 erated by energy supplied from he trolley. connected to the driving axle 2 by means of Another object of my invention is to probeveled gear wheels 18 and H. The armavide an electri ally propelled vehicle of the ture 9 of the driving motor 7 is mounted socalled traclrless trolley type which is upon a shaft 15 which is connected to the 5 usually provided with rubber tired wheels drivin axle 4 by means of beveled gear and is adapted to be independent of tracks, wheels 16 and 17. The motors may be conand to provide means whereby the usual nected to an or; ernal source of energy comgrounded trolley system of an ordinary elecprising a trolley T and ground-return rails tric railway system may be employed for 20 by means of a trolley pole 18 and brushes 0 supplying energy thereto, suitable traveling 19. A friction clutch 21, which is disposed electrical contacts being made with the trolbetween the motors 6 and C for joining the icy conductor and the track for the purpose shafts l2 and 15, be operated by a of collecting energy from, and returning it lever 22. to, the source or" supply. If the vehicle takes the form of the usual 35 further object of my invention is to traclrless trolley, the driving wheels 3 and 5 provide an electrically propelled vehicle are provided with suitable tires of rubber or having a front and a rear driving axle with other resilient and incidentally, insulating means whereby the driving axles may be material, although, in the case of mining jointly or severally operated by an external locomotives or certain other classes of source of power. hicles, the wheels 3 and 5 need not neces More specifically, my invention consists of sarily be so tired but may be of the usual electric vehicle adapted to be propelled steel construction such as are commonly cm: by energy supplied by a orage battery carployed on electric railway cars and locomoried thereon, or from a trolley conductor tives that are adapted for operation upon l5 having a ground return. The vehicle is protracks. vided with two driving axles and two mo- In case a source of energy be connected to tors having the armature shafts thereof rethe trolley T and the rails 20 and the elecspectively joined to the driving axles. A trio vehicle 1 be in its indicated position, a clutch is disposed between the two motors circuit will be completed from the trolley T 0 for joining the armature shafts, whereby the to the rails 20 which may be traced through driving axles may be jointly or severally opthe trolley pole 18, where the circuit divides erated by the motors. one branch extending through the armature F or illustrative purposes, I shall set forth 8, field windings 10 and 11, armature 9 and my invention in connection with a vehicle the brush 19 to the rail 20, and the second 3 of the trachlesstrolley type, but it should branch ente ding through storage batteries I tends around the motors 6 and 7.

tion, the driving axles 2 and 4t will be severally operated by the motors. In case it is desired to jointly operate the axles'2 and 4 by the two motors 6 and 7 the lever 22 will be operated to throw the friction clutch 21 into an operating position. IVhen operating the motors from the trolleyT, it may be noted that the storage batteries 23 and 23 are charged by the branch circuit which ex- In case it is desired to operate the electric vehicle beyond the range of the trolley T and the rails 20, the storage batteries 23 and serve as sources of energy for operating thedriviiig motors 6 and'7. The driv ing motor 7 is directly connected to the axle 45, but, if so desired,'the two shafts 15 and 12 may be connected by the clutch 21 so that the motor 7, when energized by the battery 3 may jointly operate the' driving shafts 2 and a. Similarly, the motor 6, when energized by the battery 28,may operate the axle 2 or jointly operate the axlesQ and 4.

Obviously, variations in the circuit connections and arrangement and location of parts may be effected without departing from the spirit and scope of my invention, and the advantages and benefits thereof may be secured by vehicles of a control system and apparatus differing widely' from that shown and described but which cover the same general principles. I that only such limitations shall be imposed as are indicated in the appended claims.

I claim as my invention:

1. 'In a vehicle having a front and a rear driving axle and a pair of wheels on each axle, the combination with an external source of energy and an auxiliary source of energy disposed on said vehicle, of means for severally and ointly operat ng said driving axles by said external source of onoperating said driving axles by said auxiliary source of energy.

2.v In an electrically propelled vehicle,

the combination with two driving axles, pairs ofdriving wheels thereon, two propelling motors having armature shafts geared to the 'respective driving axles, an external source of energy, and an auxiliary source of energy disposed on the vehicle, of means for severally operating said axles desire, I therefore,

' having a front and across said supply circuit,

when the motors areconnected in series to said external source for joining said armature shafts, whereby the driving axles may be jointly operated in case one motor is operated by the auxiliary source of energy.

3. In an electrically propelled vehicle of energy and means having two driving axles, the combination;

with two motors respectively joined to said axles, an external source of energy and an auxiliary source of. energy, energizing said motors in series by the external source of energy to severally operate said driving axles and to energize said motors from the auxiliary source of energy to jointly operate said driving axles. V

a. In an electrically propelled vehicle having two parallel driving axles, the combination with two motors, means for mechanically joining a motor to each of said driving axles, an external source of energy and a storage battery, of meansfor joining said motors to the external source of energy to severally operate said driving axles and to charge said storage battery and for energizing one of said motors by the storage battery to jointly operate said driving axles.

5. In an electrically propelled vehicle having two driving axles and a pair of wheels on each axle, the combination with an external source of energy, an auxiliary source of energy and two propelling motors, of means'for'severally operating said driving axles in case said motors are energized by the external source of energy and for jointly operating said driving axles in case one of said motors is energized by said auxiliary source of'energy.

6. The combination with a supply circuit comprising a trolley conductor and a rail return-,rof an electrically propelled vehicle a rear driving axle, two motors joined to said axles, means for severally or jointly operating said driving axles in casesaid motors are connected an auxiliary source of energy disposed on said vehicle, and means for severally and jointly operating said driving axles in case said motors are energized by said auxiliary source of energy. 7

In testimony subscribed my name THEODORE II. SCHOEPIE.

this .Zeth day of April,

' of means for whereof, I have hereunto 

